CN211325481U

CN211325481U - Fixed connecting rod

Info

Publication number: CN211325481U
Application number: CN201922388274.3U
Authority: CN
Inventors: 周鹏飞; 赵国军
Original assignee: Tianjin Walkman Biomaterial Co ltd
Current assignee: Tianjin Walkman Biomaterial Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-08-25
Anticipated expiration: 2029-12-26

Abstract

The utility model relates to a fixed connecting rod, fixed connecting rod includes: the first rod body, the second rod body and the third rod body; the first rod body, the second rod body and the third rod body are arranged integrally and are provided with grooves; the first body of rod is located the top of connecting rod: the second rod body is positioned in the middle of the connecting rod; the third rod body is positioned at the bottom of the connecting rod; the rod body structure has reasonable design, safe operation, convenient fixation, high surface cleanliness of the lifting rod body and good tissue compatibility, and is beneficial to the recovery of bones of patients.

Description

Fixed connecting rod

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a fixed connecting rod.

Background

In bone surgery, it is often necessary to use an external fixation frame to fix the fracture site. The prior support generally needs a connecting rod which is generally connected with a needle rod connecting clamp or a rod connecting clamp. But the connecting rod that has now generally is ultralight material connecting rod, and this kind of connecting rod is the solid pole of cylinder. Although the ultra-light connecting rod is light and portable, the requirements on strength, temperature, cleanliness and the like cannot be met.

Disclosure of Invention

To the above-mentioned problem that exists among the prior art, the utility model aims to provide a fixed connection pole, easy operation, swift connecting rod, it can provide the stability of skeleton, can guarantee again to use safe, reliable, is applicable to various types of fracture reinforcement operation.

In order to achieve the above object, an embodiment of the present invention provides a fixed connection rod, the fixed connection rod includes: the first rod body, the second rod body and the third rod body; the first rod body, the second rod body and the third rod body are arranged integrally and are provided with grooves;

the first rod body is positioned at the top of the connecting rod and clamped into a special-shaped block, the special-shaped block is provided with a first upper edge and a first lower edge, and the first rod body is clamped between the first upper edge and the first lower edge; when a first locking screw penetrates through the first upper edge and is screwed into the first lower edge, a screw cap of the first locking screw abuts against the first upper edge, and the first locking screw is screwed with the first lower edge to enable the first upper edge and the first lower edge to be tightly occluded with the first rod body, so that the first rod body is occluded and fixed on the special-shaped block:

the second rod body is positioned in the middle of the connecting rod and is inserted between the second upper edge and the second lower edge of the fixed block; when a second locking screw penetrates through the second upper edge and is screwed into the second lower edge, a screw cap of the second locking screw abuts against the second upper edge, and the second locking screw is screwed with the second lower edge to enable the second upper edge and the second lower edge to be tightly occluded with the second rod body, so that the fixed block is occluded and fixed on the second rod body;

the third rod body is positioned at the bottom of the connecting rod and clamped into the plug, the plug is provided with a third upper edge and a third lower edge, and the third rod body is clamped between the third upper edge and the third lower edge; when a third locking screw penetrates through the third upper edge and is screwed into the third lower edge, a screw cap of the third locking screw abuts against the third upper edge, and the third locking screw is screwed with the third lower edge to enable the third upper edge and the third lower edge to be tightly occluded with the third rod body, so that the plug is occluded and fixed on the third rod body.

Preferably, the diameter of the connecting rod ranges from 2mm to 6 mm.

Preferably, the grooves are arranged on the surface of the connecting rod at equal intervals, the interval between every two adjacent grooves is 0.35-0.4 mm, and the distance between the central lines of the two adjacent grooves is 1.14-1.57 mm.

Preferably, the protrusions are arranged between the grooves, and a plurality of the protrusions which are arranged at equal intervals are arranged on the surface of the connecting rod.

Preferably, the bulges are arranged between the grooves, the inner sides of the grooves are arc-shaped curved surfaces, and the curvature radius range of the arc-shaped curved surfaces is 2.5 mm-3.5 mm.

The embodiment of the utility model provides a fixed connecting rod, including the first body of rod, the second body of rod, the third body of rod, recess and arch, its design is simple, and the simple installation is safe in utilization, and is stand wear and tear anticorrosive, and the compatibility is good, realizes improving the tensile strength and the fixed effect of skeleton, is of value to the recovery of disease skeleton, guarantees user's safety.

Drawings

Fig. 1 is a side view of a fixed connecting rod (i) according to an embodiment of the present invention;

FIG. 2 is a partial enlarged view of the portion C in FIG. 1;

fig. 3 is a side view of the fixing connecting rod (ii) according to the embodiment of the present invention;

fig. 4 is a side view of a fixing connecting rod (iii) provided in the embodiment of the present invention;

fig. 5 is a schematic view of a fixing connection rod (i) according to an embodiment of the present invention;

fig. 6 is another schematic view of the embodiment of the present invention showing the use of the fixing connection rod (a);

fig. 7 is a side view of the fixing connection rod (four) according to the embodiment of the present invention.

Detailed Description

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the two components may be mechanically connected, directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Fig. 1 is a side view of a fixing connection rod (a) according to an embodiment of the present invention, fig. 2 is a partially enlarged view of a position C in fig. 1, fig. 5 is a schematic view of a use of the fixing connection rod (a) according to an embodiment of the present invention, and fig. 6 is another schematic view of the use of the fixing connection rod (a) according to an embodiment of the present invention; as shown in the figure, the embodiment of the utility model provides a fixed connecting rod 2, include: a first rod 21, a second rod 22, a third rod 23, a groove 24 and a protrusion 25.

First body of rod 21, the second body of rod 22 and the third body of rod 23 set up as an organic whole, and all have the recess, and the both ends of fixed link 2 are for sealing the form to inside is solid construction, and the both ends of fixed link 2 are smooth and flat button head.

First body of rod 21 is located the top of fixed link pole 2, and inside the dysmorphism piece 3 and realized that first body of rod 21 and dysmorphism piece 3 an organic whole are linked through the fixed of first locking screw 10 in the card of first body of rod 21, and fixed link pole 2 adopts titanium alloy to make, has good elasticity, corrosion resistance and intensity. In a particular embodiment, the shaped block 3 has a first upper edge 31 and a first lower edge 32, the first rod 21 being interposed between the first upper edge 31 and the first lower edge 32; when the first locking screw 10 is inserted into the first upper edge 31 and then screwed into the first lower edge 32, the screw cap of the first locking screw 10 abuts against the first upper edge 31, and the first upper edge 31 and the first lower edge 32 are engaged with the first rod 21 as the first locking screw 10 is screwed into the first lower edge 32, so that the first rod 21 is engaged and fixed on the special-shaped block 3.

The second rod body 22 is located in the middle of the fixed connecting rod 2 and inserted into the fixed block 4, the fixed block 4 is provided with a second upper edge and a second lower edge, the second rod body 22 is specifically inserted between the second upper edge and the second lower edge of the fixed block 4, and the second rod body 22 is used for assisting the fixed block 4 in accurately positioning the bone surface of the fracture part.

In a specific embodiment, after the second locking screw 11 is inserted through the second upper edge and screwed into the second lower edge, the screw cap of the second locking screw 11 abuts against the second upper edge, and the second upper edge and the second lower edge are engaged with the second rod 22 with the second locking screw 11 screwed into the second lower edge, so that the fixing block 4 is engaged and fixed on the second rod 22.

The third rod 23 is located at the bottom of the connecting rod 2, the third rod 23 is clamped in the plug, the plug is provided with a third upper edge and a third lower edge, the third rod 23 is clamped between the third upper edge and the third lower edge, and the third rod 23 is clamped in the plug and is integrally connected with the plug through the fixation of the locking screw.

In a specific embodiment, after the third locking screw 12 is screwed through the third upper edge and screwed into the third lower edge, the screw cap of the third locking screw 12 abuts against the third upper edge, and the third upper edge and the third lower edge are engaged with the third rod body as the third locking screw 12 is screwed into the third lower edge, so that the plug is engaged and fixed on the third rod body.

Fig. 3 is a side view of a fixed connecting rod (ii), fig. 4 is a side view of a fixed connecting rod (iii), and fig. 7 is a side view of a fixed connecting rod (iv); as shown in fig. 1 to 4 and 7, the diameter D of the connecting rod 2 is in the range of 2mm to 6mm, specifically, D1 is 6mm, D2 is 5mm, D3 is 4mm, and D4 is 3 mm; the intervals between the grooves 14 corresponding to the diameters D1, D2, D3 and D4 of the connecting rod 1 are respectively 0.35mm (B1) and 0.4mm (B2); the distance between the center lines of the two corresponding grooves is respectively A1-1.5 mm, A2-1.57 mm, A3-1.21 mm and A4-1.14 mm.

As shown in fig. 1 and 3, the radius of curvature of the arc-shaped curved surface inside the groove 14 of the connecting rod 2 is 3.5 mm.

As shown in fig. 4 and 7, the radius of curvature of the curved surface inside the groove 24 of the connecting rod 1 is 2.5 mm.

The bulges 25 are arranged between the grooves 14 of the connecting rod 1, and the surface of the connecting rod 1 is provided with a plurality of bulges 25 which are arranged at equal intervals.

Fig. 5 is a schematic view of the use of the fixing connecting rod (i) according to the embodiment of the present invention, as shown in the figure, in the embodiment of the present invention, the shaped block 3 has a first upper edge 31 and a first lower edge 32, the inner side of the first upper edge 31 is a smooth curved surface, and do not set up the screw thread, the inboard of first lower edge 32 is provided with the fastening screw thread, the top of the first upper edge 31 of dysmorphism piece 3 and the bottom of first lower edge 32 have first ball hole and first round hole respectively, the side of dysmorphism piece 3 is provided with first pole hole 33 and second pole hole 34 along dysmorphism piece 3 length direction, the aperture of first pole hole 33 and second pole hole 34 and the diameter phase-match of connecting rod 1, the inboard of first pole hole 33 and second pole hole 34 is smooth curved surface, the inboard of first ball hole 31 has cross hole 30, specific first body of rod 21 blocks respectively and establishes into in first pole hole 33 and the second pole hole 34 of dysmorphism piece 3.

Figure 6 is another schematic view of the fixing connecting rod (one) provided by the embodiment of the invention, as shown in the figures, in the embodiment of the present invention, the fixing block 4 has a second upper edge and a second lower edge, an intermediate groove is provided between the second upper edge and the second lower edge, the inner side of the second upper edge is a smooth curved surface, and no screw thread is arranged, the inner side of the second lower edge is provided with a fastening screw thread, the top end of the second upper edge of the fixed block 4 and the bottom end of the second lower edge are respectively provided with a second ball hole and a second round hole, the side surface of the fixed block 4 is provided with a third rod hole 41 and a fourth rod hole 42 along the width direction of the fixed block 4, the aperture of the third rod hole 41 and the aperture of the fourth rod hole 42 are matched with the diameter of the connecting rod 2, the inner sides of the third rod hole 41 and the fourth rod hole 42 are also smooth curved surfaces, the inner side of the second ball hole is provided with a cross hole, and the specific second rod body 22 is respectively clamped into the third rod hole 41 and the fourth rod hole 42 of the fixed block 4.

The embodiment of the utility model provides an in, the end cap has third upper edge and third lower edge, the inboard of third upper edge is glossy curved surface, and do not set up the screw thread, the inboard of third lower edge is provided with fastening screw thread, the top of end cap third upper edge and the bottom of third lower edge have third ball hole and third round hole respectively, the side of end cap is provided with fifth pole hole and sixth pole hole along end cap length direction, the aperture in fifth pole hole and sixth pole hole and the diameter phase-match of connecting rod 2, the inboard in fifth pole hole and sixth pole hole is glossy curved surface equally also, the inboard in third ball hole has the cross hole equally, concrete third body of rod 23 blocks into the fifth pole hole and the sixth pole hole of end cap respectively.

With reference to fig. 5, the following steps of using the fixing connection rod 2 of the present invention will be described by taking the first locking screw 10 and the special-shaped block 3 as an example:

the first rod bodies 21 of the two connecting rods 2 are respectively inserted into the first ball hole 33 and the first round hole 34 of the special-shaped block 3, then the first locking screw 10 is arranged in the first upper edge 31 and the first lower edge 32 of the special-shaped block 3 in a penetrating way, wherein the screw rod portion is implanted into the bone at the fracture site, the screw cap portion of the first locking screw 10 stays in the first upper edge 31 of the shaped block 3, the lower surface of the specific screw cap abuts against the curved surface in the first upper edge 31 of the shaped block 3, the double-threaded portion of the screw rod is screwed and gripped with the fastening thread in the first lower edge 32, as the first locking screw 10 is screwed with the first lower edge 32 deeply and the first locking screw 10 presses the first rod body 21 through the crossing hole 30, so that the first upper edge 32 and the first lower edge 32 of the shaped block 3 are engaged with the first rod 21, thereby realizing the engagement and fixation of the first rod 21 in the shaped block 3.

Referring to fig. 6, the following steps of using the second locking screw 11 and the fixing block 4 are illustrated as follows:

the reason why the third rod hole 41 and the fourth rod hole 42 of the fixing block 4 are aligned with the 2 connecting rods 2 respectively and then inserted and slid to the second rod body 22 is that the surface of the connecting rod 2 is provided with a plurality of protrusions 225: on one hand, the fixing block 4 can be controlled and prevented from sliding on the surface of the connecting rod 2 at will, and the friction between the rod hole and the connecting rod 2 is properly increased; on the other hand, the positioning of the fixing block 4 on the connecting rod 2 can be accurately controlled, and the optimal fit between the second lower edge of the fixing block 4 and the contact surface of the upper surface of the skeleton is realized; after the installation position of the fixed block 4 is determined, a second locking screw 11 is inserted into a second ball hole and a second round hole of the fixed block 4, wherein the screw rod part is implanted into the bone of the fracture part, the screw cap part of the second locking screw 11 stays in a second upper edge of the fixed block 4, the lower surface of the specific screw cap abuts against the curved surface in the second ball hole of the fixed block 4, the double-thread part of the locking screw is screwed with the fastening thread in a second lower edge, the gap of the middle groove between the second upper edge and the second lower edge of the fixed block 4 is further compressed along with the further downward pressing of the lower surface of the screw cap and the screwing of the threads, and the gap between the second upper edge and the second lower edge of the fixed block 4 is not changed along with the further screwing of the second lower edge of the second locking screw 11 and the pressing of the second locking screw through the cross hole to the second rod body 22, at this time, the cap portion of the screw is completely fused into the second ball hole of the fixed block 4, and the second upper edge and the second lower edge of the fixed block 4 are tightly engaged with the second rod 22, so that the second rod 22 is engaged and fixed in the fixed block 4.

Similarly, the steps of using the plug and the third rod 23 are similar to the method of using the shaped block 3 and the first rod 21.

The third rod bodies 23 of the two connecting rods 2 are aligned with the fifth rod hole and the sixth rod hole of the plug respectively and then inserted into the rod holes, a third locking screw is inserted into the third ball hole and the third round hole of the plug, the screw rod part of the third locking screw is implanted into a bone of a fracture part, the screw cap part of the third locking screw stays in the third upper edge of the plug, the lower surface of the specific screw cap abuts against the curved surface in the third ball hole of the plug, the double-thread part of the locking screw is screwed and bitten with the fastening thread in the third lower edge, the third lower edge is screwed and deepened with the third locking screw, and the third locking screw compresses the third rod bodies 23 through the cross holes, so that the third upper edge and the third lower edge of the plug are bitten with the third rod bodies 23, and the third rod bodies 23 are bitten and fixed in the plug.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixed connection rod, characterized in that said fixed connection rod comprises: the first rod body, the second rod body and the third rod body; the first rod body, the second rod body and the third rod body are arranged integrally and are provided with grooves;

2. The fixed connecting rod of claim 1, wherein the diameter of the connecting rod ranges from 2mm to 6 mm.

3. The fixed connecting rod of claim 1, wherein the grooves are arranged on the surface of the connecting rod at equal intervals, the interval between two adjacent grooves is 0.35-0.4 mm, and the centerline distance between two adjacent grooves is 1.14-1.57 mm.

4. The fixed connecting rod of claim 1, wherein said recesses are formed with protrusions therebetween, and a surface of said connecting rod is provided with a plurality of said protrusions arranged at equal intervals.

5. The fixed connecting rod of claim 1, wherein the inner side of the groove is an arc-shaped curved surface having a radius of curvature ranging from 2.5mm to 3.5 mm.